Year	Percent of GDP
2004-01-01	11.1146
2005-01-01	12.7509
2006-01-01	15.8722
2007-01-01	19.9188
2008-01-01	27.0955
2009-01-01	28.3892
2010-01-01	30.8453
2011-01-01	31.8922
2012-01-01	30.6432
2013-01-01	31.3996
2014-01-01	32.0748
2015-01-01	32.6607
2016-01-01	33.4178